Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
17008excellentexcellent21excellent
160010excellentexcellent11excellent
150035goodexcellent31excellent
140016goodexcellent31excellent
130017goodexcellent31excellent
120021goodexcellent41excellent
110021goodexcellent41excellent
100021goodexcellent41excellent
090020goodexcellent41excellent
080020goodexcellent31excellent
070022goodexcellent41excellent
060026goodexcellent41excellent
050020goodexcellent41excellent
040020goodexcellent41excellent
030020goodexcellent41excellent
020019goodexcellent31excellent
010018goodexcellent31excellent
000025goodexcellent31excellent
230019goodexcellent31excellent
220018goodexcellent31excellent
210015goodexcellent31excellent
200013goodexcellent21excellent
190010excellentexcellent21excellent
180011excellentexcellent21excellent